Patent Number: 7,133,230

Title: Recording head and information recording apparatus

Abstract: To generate a satisfactory recording magnetic domain on a recording medium and to improve the durability of a recording head, an information recording apparatus for generating an optical near field and thermo-magnetically recording information on the recording medium is provided with a light source, a magnetic pole for applying a magnetic field to the recording medium and a diffuser that generates an optical near field in the vicinity of the recording medium when light from the light source is radiated. The diffuser is formed with it in contact with the magnetic pole so that the face which light from the light source irradiates is substantially perpendicular to the recording medium. Thereby, recording density in the information recording apparatus can be increased, simultaneously the reliability can be also enhanced and as a result, the cost can be reduced.

Inventors: Saga; Hideki (Fuchu, JP), Matsumoto; Takuya (Hachioji, JP), Ishikawa; Kei (Kokubunji, JP), Sukeda; Hirofumi (Tokorozawa, JP)

Assignee: Hitachi, Ltd.

International Classification: G11B 5/02 (20060101); G11B 11/00 (20060101)

Expiration Date: 2019-11-07 0:00:00